/// <summary>
/// Executes the script. If no instance of the script object exists, a error message will be stored and the return value is false.
/// If the script object exists, the data change notifications will be switched of (for all tables).
/// Then the Execute function of this script object is called. Afterwards, the data changed notifications are switched on again.
/// </summary>
/// <param name="myTable">The data table this script is working on.</param>
/// <param name="reporter">Progress reporter that can be used by the script to report the progress of its work.</param>
/// <returns>True if executed without exceptions, otherwise false.</returns>
/// <remarks>If exceptions were thrown during execution, the exception messages are stored
/// inside the column script and can be recalled by the Errors property.</remarks>
public bool ExecuteWithSuspendedNotifications(Altaxo.Data.DataTable myTable, Altaxo.IProgressReporter reporter)
{
bool bSucceeded = true;
Altaxo.Data.DataTableCollection myDataSet = null;
if (null == _scriptObject && !_wasTriedToCompile)
{
Compile();
}
// first, test some preconditions
if (null == _scriptObject)
{
_errors = ImmutableArray.Create(new CompilerDiagnostic(null, null, DiagnosticSeverity.Error, "Script Object is null"));
return(false);
}
myDataSet = Altaxo.Data.DataTableCollection.GetParentDataTableCollectionOf(myTable);
IDisposable suspendToken = null;
if (null != myDataSet)
{
suspendToken = myDataSet.SuspendGetToken();
}
else if (null != myTable)
{
suspendToken = myTable.SuspendGetToken();
}
try
{
((Altaxo.Calc.TableScriptExeBase)_scriptObject).Execute(myTable, reporter);
}
catch (Exception ex)
{
bSucceeded = false;
_errors = ImmutableArray.Create(new CompilerDiagnostic(null, null, DiagnosticSeverity.Error, ex.ToString()));
}
finally
{
if (null != suspendToken)
{
suspendToken.Dispose();
}
}
return(bSucceeded);
}
/// <summary>
/// Shows a dialog to add columns to a table.
/// </summary>
/// <param name="table">The table where to add the columns.</param>
/// <param name="bAddToPropertyColumns">If true, the columns are added to the property columns instead of the data columns collection.</param>
public static void ShowAddColumnsDialog(Altaxo.Data.DataTable table, bool bAddToPropertyColumns)
{
var lbitems = new Altaxo.Collections.SelectableListNodeList
{
new Altaxo.Collections.SelectableListNode("Numeric", typeof(Altaxo.Data.DoubleColumn), true),
new Altaxo.Collections.SelectableListNode("Date/Time", typeof(Altaxo.Data.DateTimeColumn), false),
new Altaxo.Collections.SelectableListNode("Text", typeof(Altaxo.Data.TextColumn), false)
};
var ct = new IntegerAndComboBoxController(
"Number of colums to add:", 1, int.MaxValue, 1,
"Type of columns to add:", lbitems, 0);
Current.Gui.FindAndAttachControlTo(ct);
if (true == Current.Gui.ShowDialog(ct, "Add new column(s)", false))
{
var columntype = (System.Type)ct.SelectedItem.Tag;
using (var suspendToken = table.SuspendGetToken())
{
if (bAddToPropertyColumns)
{
for (int i = 0; i < ct.IntegerValue; i++)
{
table.PropCols.Add((Altaxo.Data.DataColumn)System.Activator.CreateInstance(columntype));
}
}
else
{
for (int i = 0; i < ct.IntegerValue; i++)
{
table.DataColumns.Add((Altaxo.Data.DataColumn)System.Activator.CreateInstance(columntype));
}
}
suspendToken.Dispose();
}
}
}
